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Old 21st October 2012, 10:41 AM   #8271
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6.5mv
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Old 21st October 2012, 01:02 PM   #8272
RCruz is offline RCruz  Switzerland
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Hi Salas

Just powered first stage of the "experiment" and got 8v on BC560c emitter... is this ok ?

I am measuring 7.5v at the base so the ccs is working fine.
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Last edited by RCruz; 21st October 2012 at 01:07 PM.
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Old 21st October 2012, 01:10 PM   #8273
Salas is offline Salas  Greece
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Orientation OK? Emitter towards the Jfets drains underneath? Is there big voltage drop on the resistor between power rail and those drains? That means there is bias to them.
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Old 21st October 2012, 01:11 PM   #8274
Salas is offline Salas  Greece
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P.S. We look for emitter voltage to ground, not Vbe.
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Old 21st October 2012, 01:17 PM   #8275
RCruz is offline RCruz  Switzerland
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Emitter to gnd is now 8.1V... collector to gnd is 4.05v

24.5v Vdrop on the 1k5 resistor (R13)

PS: On the first post I just correctd, I did not have the Gates of the input k170 grounded..... sorry
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Last edited by RCruz; 21st October 2012 at 01:20 PM.
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Old 21st October 2012, 01:18 PM   #8276
Salas is offline Salas  Greece
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So its ok, no panic for now. Boom and smoke comes a bit later.
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Old 21st October 2012, 01:21 PM   #8277
Siberia is offline Siberia  Lithuania
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Quote:
Originally Posted by Salas View Post
Alright, let us know if it makes a better combo because I got one too. I may make it a same stage.
Nick, how do you find the sound of the cartridge? I own the same.
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Old 21st October 2012, 01:23 PM   #8278
Salas is offline Salas  Greece
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Good for Rock, dynamic. It can be tizzy if not a bit nose up on good arm.
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Old 21st October 2012, 01:32 PM   #8279
RCruz is offline RCruz  Switzerland
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Panic ? why should I panic ?

I guess for 7,5V on the base, 8.1v on the emitter is allright no ?
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Old 21st October 2012, 01:33 PM   #8280
AndrewT is offline AndrewT  Scotland
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0.6Vbe, if the polarity is correct, sounds just right.
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